I am trying to embed a Vimeo video into a post. I am inserting the URL into the page like so.

Lorem ipsum dolor sit amet, consectetur adipiscing elit.

http//vimeo.com/1234

Lorem ipsum dolor sit amet, consectetur adipiscing elit.

It is outputted as the plain text URL. I have tried it with a youtube link and it worked perfectly. I have also tried wrapping it in the [embed] shortcode but that just wrapped it in anchor tags.

Any suggestions would be much appreciated, thanks.